ThermaCELL ProFlex Bluetooth-Controlled Heated Insoles

From the Amazon Listing

• PLAY AT YOUR PEAK - Perform your best when it counts. Game Day Pro adapts to your shoe, foot and playing style, with a firm, bouncy base for takeoff and a cushioned landing for basketball, volleyball, football, tennis, baseball and running.
• SUPPORT FOR EVERY MOVE - A carbon-like composite Pro Base and X-Frame torsional support stabilize the heel and midfoot through quick cuts, pivots and hard stops. A patented contoured shape supports your arches and helps relieve plantar fasciitis pain, and a forefoot grip adds court feel.
• CUSHION EVERY LANDING - Two foams work together: Pulsion Energyfoam returns energy for explosive takeoffs, and Shockfree foam absorbs impact when you come down. Active Heel Technology reduces peak pressure at the heel through rebounds, jumps and sprints.
• BUILT FOR ATHLETES. WORN BY PROS. - Developed with podiatrists and worn by professional athletes, Game Day Pro brings pro-level comfort, alignment and fatigue prevention to players at every level. A low-friction top cloth reduces hot spots and slipping, and odor control helps keep shoes fresh.
• NO TRIMMING REQUIRED - Choose your shoe size, remove the existing insole and replace it with Game Day Pro. Each size is cut to fit, so it goes straight from the box into basketball shoes, court shoes, cleats or running shoes with no scissors and no guesswork.